Tucking attachment for knitting-machines



A. E. PAGE. TUCKING ATTACHMENT FOR KNITTING MACHINES. APPLICATION man APR. 24, I920.

1,367,425. Patented Feb. 1, 1921.

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A. E. PAGE.

TUCKING ATTACHMENT FOR KNITTING MACHINES.

' APPLICATION FILED APR. 24, 1920.

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L 12 3... flienffiTPgge A. E. PAGE. TUCKING ATTACHMENT FOR KNITTING MACHINES.

APPLICATION FILED APR. 24, 1920.

Patented Feb. 1, 1921.

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UNITED srA'rEs' PATENT ormce.

ALBERT E. PAGE, OF BROOKLYN, NEW YORK, ASSIGNOR TO SCOTT AND WILLIAMS, INC., 01! NEW YORK, N. Y., A. CORPORATION OF MASSACHUSETTS.

TUOKING ATTACHMENT FOR KNITTING-MACHINES.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed April 24, 1920. Serial No. 376,211.

My invention consists of an improved tuoking attachment for knitting machines,

more particularly ada ted for use in the production of the fashioned seamless stocking which forms the subject of the Scott .Patent No. 1,233,714, dated July 17, 1917.

, Said patent shows a seamless stocking have till ing at the back of the leg two rows of distinguishing marks, which are referably formed by tuck stitches, that is, oops held up in given wales and courses.

A convenient means for roducing tuck stitches is that disclosed in t e Brown Patent 642,579, February 6, 1900, and comprising the provision of needles with longer latches for knitting those wales in which the tuck stitches are to be produced than in the case of the needles for the wales in which no tuck stitches are to be made, and

in connection therewith is provided a movable clearing cam and mechanism to oper my inventiombut I do not limit myself to that .type of tuck-producingmeans.

According to my, present invention, the

clearing cam is set-to the tucking position, loy means of the pattern chain and a tr ips ping means operated from some mov ng part of the machine causes the clearing cam to return to the plain knitting position,

at the proper time. Thereby I am enabled to secure appropriate timing from slow y while the bracket 3 is still held in its tilted position with its moving parts of the machlne'.

In the accompan ing drawings I have tuckin .machine for. application to one of the wel known Scott.

shown my improve and Williams machines, employing a rotating needle cylinder and'stationary cam cylinder.

' on its Figure 1 is a side elevation illustrating the main elements of my invention;

F g. 2 is a front view of the same;

F g. 3 is a plan view;

Flg. 4 is a view of the stitch cams;

Fig. 5 illustrates long and short latch needles.

In the case illustrated I have shown the leadlng stitch cam 50 as the movable clearmg cam, plvoting it at 51 and providing its free end with a pin 52, rojecting to the exterior of the cam cylindhr. This pin 52 as seen 111 Fig. 3, rests upon the outer end of a lever 49, pivoted. at. 48 to a suitable bracket on the bed plate 10' of the inachine and connected at the other end to an upright rod 19. The lower end of this rod 19 has a pin and slot connection at 11,.12 wlth the arm 10 0f a bracket 3, which-is pivoted on the horizontal shaft 2 and is" per side of the arm 10, as seen in Fig. 1,

when the pin 11 on the arm 10 is at the bottom of the slot 12 in the rod 19. A spring 13 (Fig. 1) tends to draw and thus hold the latch 1n engagement with the end of the arm 10, and it also tends to drawdown the rod 19 and lift the clearing cam. When a lug 9 on the pattern chain comes into contact with the pin 7, itjrocks the bracket 3 wet with the result that the rod 19 is lifte and the clearing cam 50 thereupon dropped to the position shown hy'dotted lines in Fig. 4, where the long latch needles I willno longer clear their stitches, and tucks will be produced solong as the rod 19 remains elevated. But since the pattern chain is'relatively slow moving and it is undesirable to tuck more than two successive pin 7 0n the lug 9 of the pattern chain. I r

This tripping mechanismconsists of a push rod 23 pivoted at 24 to the usual rookmg quadrant 22, which rocks on the axis 25 and also has pivoted to it'at 21 thefeedllo 27, (Fig. 2) on the pivoted latch 14, disengaging the latter from the arm 10. If at the moment the bar 29 is in the elevated position indicated in Fig. 1, this bar will thereupon drop, and the clearing cam 50 will rise and the tucking cease. The points of pivotal connection of the feed pawl 20 and the tripping rod 23 to the quadrant 22 are such that for the most part the two move in opposite directions, and the tripping rod has a longer movement than does the feed pawl. This tripping of the cam-controlling rod 19 is timed to take place. so that the clearing cam will be returned to its full clearing position on or before the completion of two revolutions.

When therefore the pin 7 of the bracket 3 drops off the lug 9, so that the bracket 3 swings back toits normal posltion shown in Fig. 1, the pin 11 on the arm 10 will drop back again to the bottom of the slot '12 in the bar 19 and thereupon the pivoted latch 14 will rengage the arm 10, as shown. Plain knitting will continue until another lug 9 on the pattern chain comes along to rock the swinging bracket 3 and thereby raise the bar 13 and so lower the clearing cam 50 for tuckclaim as my invention 1., A knitting machine having needles some of which are adapted to be used for tucking and a movable clearing cam therefor in combination with a pattern mechanism and devices operated by the pattern mechanism to move said cam to the tucking position and a tripping means operated from a moving part of the knitting machine to cause the clearing cam to return to the plain knitting position.

2. A knitting machine having needles some of which are adapted to be used for tucking and a movable clearing cam there-v for in combination with a pattern mechanism and devices operated by the pattern mechanism to move said cam to the tucking position and a tripping means operated from a moving part of the machine to trip said cam controlling devices, for the purpose set forth.

3. A knitting machine having needles some of which are adapted to be used for tucking and a movable clearing cam therefor in combination with a pattern mechanism and devices operated by the pattern mechanism to move said cam to the tucking position, a rocking arm, a feed pawl for the pattern mechanism operated by the latter, and a trip rod also operated by said rocking arm to trip the cam controlling devices.

4. A knitting machine having needles some of which are adapted to be used for tucking and a movable clearing cam therefor in combination with a pattern mechanism, a pivoted bracket adapted to be operated by the pattern mechanism, a bar htiving a :pin and slot connection with said bracket and controlling the position of the clearing cam, a holding latch for the pin and slot connection and means for tripping said latch.

5. A knitting machine having needles some of which are adapted to be used for tucking and a movable clearing cam therefor in combination 'with a pattern mechanism, a pivoted bracket adapted to be operated by the pattern mechanism, a bar having a pin and slot connection with said bracket and controlling the position of the clearing cam, a holding latch for the pin and slot connection, a trip bar for the latch, a rocking quadrant to which the trio bar is pivoted and a feed pawl for the pattern mechanism, also pivoted to said quadrant.

In-testimonywhereof I have signed my name to this specification.

ALBERT E. PAGE. 

